//   OData .NET Libraries
//   Copyright (c) Microsoft Corporation. All rights reserved.  
//   Licensed under the Apache License, Version 2.0 (the "License");
//   you may not use this file except in compliance with the License.
//   You may obtain a copy of the License at

//       http://www.apache.org/licenses/LICENSE-2.0

//   Unless required by applicable law or agreed to in writing, software
//   distributed under the License is distributed on an "AS IS" BASIS,
//   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
//   See the License for the specific language governing permissions and
//   limitations under the License.

namespace Microsoft.OData.Edm.Csdl.CsdlSemantics
{
    using Microsoft.OData.Edm;
    using Microsoft.OData.Edm.Csdl.Parsing.Ast;
    using Microsoft.OData.Edm.Library;

    /// <summary>
    /// Provides semantics for CsdlEntitySet.
    /// </summary>
    internal class CsdlSemanticsEntitySet : CsdlSemanticsNavigationSource, IEdmEntitySet
    {
        public CsdlSemanticsEntitySet(CsdlSemanticsEntityContainer container, CsdlEntitySet entitySet)
            : base(container, entitySet)
        {
        }

        public override IEdmType Type
        {
            get { return new EdmCollectionType(new EdmEntityTypeReference(this.typeCache.GetValue(this, ComputeElementTypeFunc, null), false)); }
        }

        public override EdmContainerElementKind ContainerElementKind
        {
            get { return EdmContainerElementKind.EntitySet; }
        }

        protected override IEdmEntityType ComputeElementType()
        {
            string type = ((CsdlEntitySet)this.navigationSource).ElementType;
            return this.container.Context.FindType(type) as IEdmEntityType ?? new UnresolvedEntityType(type, this.Location);
        }
    }
}
